Structure 24187 · Ouachita County, AR

Ouachita Cr178 Z-f over North Bayou

Carries Ouachita Cr178 Z-f over North Bayou, .9 Mi N Jct CR 178 & SH 4.

Overall conditionGood

Set by its lowest-rated component: Superstructure and Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT58 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 7/9 · sets the rating

58 ft end to end, longest span 15 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built20215 years old
Length58.1 ft17.7 m
Daily traffic23counted 2018
Last inspectedJune 2023every 24 months

Location

StateArkansas
CountyOuachita
Location.9 Mi N Jct CR 178 & SH 4
CarriesOuachita Cr178 Z-f
CrossesNorth Bayou
Coordinates33.56997, -93.03075

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length58.1 ft (17.7 m)
Max Span15.4 ft (4.7 m)
Deck Width12.1 ft (3.7 m)
Deck Area65.5 sq m
Main Spans4
Year Built2021

Traffic

Avg Daily Traffic23 (2018)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000024187

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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